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Related Experiment Videos

Constitutive and inflammatory lymphocyte trafficking

R M Binns1, A Whyte, S T Licence

  • 1Immunology Department, Babraham Institute, Cambridge, UK.

Veterinary Immunology and Immunopathology
|November 1, 1996
PubMed
Summary

This study examines lymphocyte trafficking in pigs, revealing complex migration patterns. Current hypotheses on lymphocyte homing need refinement to fully explain observed heterogeneity in various tissues.

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Area of Science:

  • Immunology
  • Veterinary Science
  • Cell Biology

Background:

  • Lymphocyte trafficking is crucial for immune surveillance and response.
  • Early research focused on basic lymphocyte migration, with evolving hypotheses over time.
  • Understanding lymphocyte homing mechanisms is key to immune system function.

Purpose of the Study:

  • To provide an overview of lymphocyte trafficking in pigs.
  • To detail current knowledge and hypotheses regarding lymphocyte migration.
  • To investigate lymphocyte entry into lymphoid, non-lymphoid, and inflammatory tissues in vivo.

Main Methods:

  • Utilized an inbred herd of MHC homozygous Large White pigs.
  • Employed labeled (FITC or 51Cr) and unlabeled donor lymphocytes and subsets.

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  • Analyzed lymphocyte entry into various tissues, including models of inflammation.

    • Main Results:

    • Demonstrated constitutive lymphocyte entry via high endothelial venules (HEV-mediated).
    • Identified non-HEV-mediated lymphocyte homing mechanisms.
    • Observed lymphocyte entry into inflammatory models, highlighting the role of E-selectin.

    Conclusions:

    • Lymphocyte homing is complex and heterogeneous at both population and subset levels.
    • Current hypotheses on lymphocyte migration may be too simplistic.
    • Further research is needed to fully elucidate the intricacies of lymphocyte trafficking.